7/17/2012STScI-2012-28143.Why Is Earth So Dry?
With large swaths of oceans, rivers that snake for hundreds of miles, and behemoth glaciers near the north and south poles, Earth doesn't seem to have a water shortage. (More)

7/11/2012STScI-2012-32144.Hubble Discovers a Fifth Moon Orbiting Pluto
A team of astronomers using NASA's Hubble Space Telescope is reporting the discovery of another moon orbiting the icy dwarf planet Pluto. The moon is estimated to be irregular... (More)

7/10/2012STScI-2012-26145.Hubble Unmasks Ghost Galaxies
Astronomers have puzzled over why some puny, extremely faint dwarf galaxies spotted in our Milky Way galaxy's back yard contain so few stars. These ghost-like galaxies are thought... (More)

7/3/2012STScI-2012-30146.NASA's Hubble Views a Cosmic Skyrocket
Resembling a Fourth of July skyrocket, Herbig-Haro 110 is a geyser of hot gas from a newborn star that splashes up against and ricochets from the dense core of a cloud of molecular... (More)

6/19/2012STScI-2012-27149.Most Quasars Live on Snacks, Not Large Meals
Black holes in the early universe needed a few snacks rather than one giant meal to fuel their quasars and help them grow, a new study shows. Quasars are the brilliant... (More)